Bump async-graphql-axum from 7.0.13 to 7.0.15

Bumps [async-graphql-axum](https://github.com/async-graphql/async-graphql) from 7.0.13 to 7.0.15.
- [Changelog](https://github.com/async-graphql/async-graphql/blob/master/CHANGELOG.md)
- [Commits](https://github.com/async-graphql/async-graphql/commits)

---
updated-dependencies:
- dependency-name: async-graphql-axum
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.lock

@@ -5,7 +5,7 @@ edition = "2021"
 
 [dependencies]
 async-graphql = { version = "7.0.6", features = ["chrono"] }
-async-graphql-axum = "7.0.6"
+async-graphql-axum = "7.0.15"
 axum = "0.7.3"
 chrono = "0.4.38"
 serde = { version = "1.0.188", features = ["derive"] }